I’m not sure anywhere is “typical of the nation”, as each state sets their own, and they vary widely.
I, too, have wondered at the rationale behind some of them.
Connecticut adopted the “can’t sell alcohol and gas” rule while I lived there, and they said it was to discourage drinking and driving. Virginia has no such rule.
As for the distance from the pumps, I’m guessing that some stores, like maybe those grocery stores that now have gas pumps, argued that they were effectively two separate businesses owned by the same company and why can’t that grocery sell wine just because it also has a gas outlet, so a rule was made that if the store way a certain number of feet from the gas, then it was separate.
As others have addressed, the reduced hours (or outright ban on sales) on Sunday tends to be an outdated religious-based law.
When I lived in Connecticut, beer and wine sales in stores (to take home and consume there) ended at 8pm, and no sales at all on Sunday. Bars were still open until 2.
Here in Virginia, sales end at midnight and resume at 6am. Again, bars are open until 2.
It seems to be that if anything the bars should close first: getting drunk at home isn’t really the problem, it’s getting drunk and then trying to go home that makes a problem. But maybe there’s an issue I’m just not seeing there.
Then again, in my role as a store clerk I am thankful for the rule, as it saves me from a lot of awkward conversations. See, it’s illegal to sell alcohol to someone who’s drunk. But when you tell somebody that, they always think that’s negotiable. “I’m not drunk!” “I’m just a little tipsy.” and my favorite, “Aww come on, Please?”
“Sorry, can’t sell alcohol after midnight.” doesn’t sound negotiable, and so the drunk folks on their way home from the bar just buy their cigarettes and leave. Then all I have to do is make sure they aren’t getting in on the driver’s side and nobody needs to get arrested. (I have had a customer react so badly to being told he couldn’t buy beer because he appeared to have been drinking that … he left in handcuffs.)
Discussing these issues reminds me of the time our State Legislator came to speak to my high school. He is still me favorite politician ever, mostly because he was bluntly honest with us. (It helped that he was the older brother of a classmate, I’m sure.) When asked why our state had raised the drinking age from 18 (first to 19, then 20, and finally to 21), he said that there was pressure to appear to be doing something about drinking and driving, and that all the studies show that people 18 to 21 “by and large don’t vote”.
So the laws may not exactly make sense, unless you consider who’s getting screwed by them and how much that will hurt someone’s chances of reelection. 