The car crafting was epic in Horizon. You could take a pile of crap and make it a top level car with tuning. In this, you slap some parts on and its the same level. Boring.
Depends on which parts. The amount of upgrades you can add depends on the car level. The car level increases the more you drive with it. I also noticed that when I went back to do the race on a car after having done the 3 practice laps, I had to do them again, which is a minor complaint. But, I once restarted a race because I needed a win and moved my starting grid position up by two spots and still was only able to overtake the leading car in the second before last corner, but I kept my car points from the unfinished race. So I guess you can level up you car quicker like that.
I like the car physics more on this than previous ones, the tires wear off more clearly now. All my friends who've played it since last week are also liking or loving it. We'll probably try out the online races (private) this weekend. I've had no bugs or glitches on Series X but one friends has gotten bumped to the dashboard a few times. Though since it happens to him on CoD games too, I'm leaning on it possibly being an issue with his Series X. Fro mwhat I've read, Nordschleife and Monza will be added free next year, with the former in March. Not a real miss, since we didn't race there too much, because people kept falling asleep on some areas.
Yes, I've also driven right into a barrier after dozing off and one guy was frequently found stopped at the side of the track and heard snoring (because it was game chat back then).