Smart arse cars. Manufacturers build so much electronic bling into them, it takes five minutes to shut the thing up so you can go for a drive.
I want a car that has a switch with two positions:
1. I know how to drive (examples: that's a backpack on the passenger seat, yes I know the lights are on and the door is open, yes I know my safety belt is off I'm only backing down the driveway, that's a trailer on the rear not an obstacle, etc, etc)
2. I'm a dumb-ass (warn me about all the examples above and more)