Cars in 2004

Yes their rather brave attempt at guessing at what cars might look like in 2004 was certainly turned out to be embarrassingly off the mark, LOL.

They were just a tad off

nobody should have approved those designs for the film

When they are setting a movie only 10 years in the future like they did with Timecop, I don't see why they don't just use new cars (1994 models in this case). 10-year-old cars still being on the road is not at all uncommon. In fact, the current average age of cars on the road in the US is 12½ years old. It would be more believable for a cop to have a 10-year-old car than the latest hypothetical gee-whiz self-driving car too. For wealthy characters who wouldn't likely be driving or riding in an average 10-year-old car, just use a pristine classic car for them, many of which have more cachet than any new car anyway.

The idea of "futuristic" guns in the near future is dumb too. In 1994 fundamental gun technology hadn't changed in nearly a century, so why would they expect a big leap in the next 10 years? Even today, 20 years after the then-future (2004) setting of Timecop, fundamental gun technology still hasn't changed. There are just a lot more makes/models that are made largely of cheap plastic (à la Glock).