Sadly, people do drive everywhere and those of us that don't are in a very small minority.
Reading about two shops closing in our local town centre, the usual about 'there's no parking' came up, which is always bizarre, because there's lots of parking and its even free, but yes, you would have to walk maybe two entire minutes. There is actual parking on both sides of the high street, of course, but that's all the space there is. If your business is dependent on somehow abrogating the physical laws of the universe and manipulating time and space to allow several cars to park simultaneous in the same place, well, I admire your optimism. I'm not sure, to be honest, that people get up in the morning and decide to drive to the local town centre just to buy a sausage roll either.
The irony, of course, is that car-culture is one of the key things killing local high streets. I think it says something that people just don't get that, there's a certain blindness.