Lets say that I have a car that can travel short distances at 0.9c (c being that speed of light thingy) that didn’t crush me nor cause the air hitting the windshield to go into thermonuclear fusion. I see a parking spot at the end of the block, hit hyperdrive and almost instantainously appear right at the spot, all with in site a a cop.
Probably nothing. His radar wouldn’t even register you, since it would be redshifted well below the receiver’s ability to detect it. From his perspective, he’d see you disappear, then reappear in the parking space at nearly the same instant. Since such things don’t happen in most people’s everyday experience, he’d probably write it off as a momentary observational glitch. He probably wouldn’t even bother reporting it, since no one would believe him.
Speeding. Failure to signal. (There is a time requirement for signals, in VA, anyway.) Might have been an illegal lane change, too. You in a heap a trouble, boy.
Assuming you didn’t hit anyone or destroy half the city with the shockwave, probably any of the things you could be charged for if you were driving 10 miles per hour over the limit. Speeding and reckless endangerment come to mind.
Also, if you got up to 0.9c, wouldn’t your mass increase significantly. I don’t know how the math would work out, but wouldn’t you cause a large gravitational disturbance?
Well, it would but not too badly. I think around 0.9c you’d have about four times the mass you do now. Not nearly enough to achieve your own gravitational effect (at least none worth noting).
The graph showing mass increase in relation to velocity is not a straight line but one that curve more steeply the faster you go. Up to 0.3c the effect is barely noticeable. At around 0.65c you double your mass. Between 0.9c and 1.0c you jump from four time your mass to infinite mass.
Well, you could also look at it this way: how much trouble would you be in if you fired, say, a supersonic projectile down Main Street? That’s only a tiny fraction of the speed you’d be going.
I’m not sure about the frequency shift being too much for a radar gun, but I don’t have time to calculate it.
I’m certain however that you could be gotten for infraction of local noise ordnaces (~0->.9c in under 1 second will be hella loud). Probably stunting, dangerous driving, and (depending on local laws), having unapproved automotive equipment.