EZ-Pass is fuckin cool. I barely have to slow down at all. You can coast through at about 10mph. MUCH faster than waiting in line. I love it.
And EZ-Pass records can only be seen under subpoena, which means you have to already be a suspect for Them to look at your travel records.
While you make a good joke, I would remind you that the feds don’t own the Post Office anymore; it’s a private company. Sorry to ruin the fun, though… 
Back to the OP. I’ve grown quite familiar with tollbooths since moving to Florida. The Sanibel Causeway has a three-lane tollbooth (only for island-bound traffic). The cash toll for cars is $3.00 for, I gather, two reasons:
While it isn’t particularly good at the first point, the county (which now owns the causeway) is very happy about the second. The left-most lane is the “LeeWay Only” lane, LeeWay being the electronic toll collection system for the three toll bridges in Lee County. This means that I can go through without throwing any coins at all and just having the system take 50¢ out of a prepaid account. Here’s what I really hate:
-Tourists that, even though there have been signs posted for a damn mile back, still act surprised when they get to the lane and either try to cut someone else off to get in one of the other lanes or get stuck in that lane and block up traffic while someone comes out of the next booth over and takes their cash.
-People that, when the drawbridge has been raised or other traffic blockages mean that the traffic is at a standstill, pull out of the tollbooth and try to cut in front of everyone else sitting in line. Was I the only one that learned the concepts of queues and taking turns in kindergarten?
Also, one last rant: When I was preparing to drive over to Ft. Lauderdale for the recent Dopefest, I looked at the route and realized I should bring a bag of quarters for the toll road I’d need to take once I got there. While I did gather a small bag of quarters, I was lucky that I found another bag under the passenger seat, because there were a hell of a lot more tolls over there than I expected. I paid one toll getting on the expressway, one getting off, and every exit seemed to have a 25-75¢ toll on it. I barely had enough to pay the $1.50 to get back across Alligator Alley so I could get home.
I’m surprised nobody has mentioned Ontario’s Highway 407, which is an all-electronic toll road. No tollbooths, or even slowing down. You get on and off the highway just like you do other freeways.
There are two ways to use the highway: by getting a transponder from a Ministry of Transport office (the better deal if you’re going to be using the road often) or using the road on a per-use basis.
A transponder identifies you and mounts on the windshield or dashboard. When you enter the highway, an overhead gantry “reads” your transponder and logs your entry point. When you leave the highway, another gantry “reads” your transponder and logs the exit point. Once a month, you get a bill showing all your trips and the cost. A transponder is assigned to a driver, not a car, which means that I can use my transponder in another car (say, if I use my wife’s car one day) if I want to.
Per-use is more expensive because a camera snaps a photo of your car (and most importantly, its license plate) getting on and off the highway. The extra cost per trip is for the photo/video (not sure which) equipment and for someone to read the photos. Billing is done monthly this way as well.
Out-of-province or US drivers do not get a break; from what I understand, the administrators of the road have agreements with provincial and state transportation authorities so that if a non-Ontario-plated car uses the road, the car owner will still get a bill mailed to their home or business at the end of the month. (Not sure what happens if the bill is not paid by an out-of-province or US driver though.)
As for tracking your movements, if you don’t want anybody to know where you’re travelling, just take the 401 or any other of the parallel roads. They are free but will be somewhat slower and more congested though.
The only drawback of the 407 is the cost. It is expensive to drive on that road: currently 11c per kilometer from 0600 to 2300, and slightly less from 2300 to 0600. This adds up quickly, and turns a 50 km (30 miles) trip into a $5.50 toll. Not bad if used once, but if you had to travel twice a day to and from work (which I had to do for a while), you quickly realize you’re spending $55.00 a week on tolls. It is literally highway robbery, and probably worthy of its own Pit rant.
Still, I keep my transponder because I do use the road occasionally and its cheaper to keep it than to pay the per-use non-transponder charge. But except for the cost, I think that the 407’s electronic method is a much better way to run a toll road than to use toll booths and have the necessary slowdowns and mayhem at the toll plazas.
Some years back, there was a big to-do in Jacksonville when all the toll bridges became toll-less. The sales tax went up half a cent. It must have been worth it, because one of the old toll bridges has been replaced with a brand-new shiny one, and another is in the process of being replaced. Of course, we pay 7% sales tax on everything… they get your pennies one way or another, I s’pose…