Maybe he was in a traffic jam, and by some weird accident. A girl with name name Paris was sitting in the car beside and smoking with the window open. And some smoke blew into Toms car.
Or joking aside. Some hover cars have been made. But they make way to much noise, use a lot of fuel. And they are impractical on all levels. In many cases the people behind the gadget. Have run out of money before a full working prototype has been made http://gizmodo.com/280546/moller-m200g-hover+car-in-production-and-selling-for-125k
Hovercraft have been around since the late 1910's.
Maglev trains were first working in the late 70's early 80s.
Although the car at the begging of Part 1 took off, everyone know's the coolness of Part 2 was because of the hover boards in part 2, which came out in 89, science was way ahead of the science fiction =-) But obviously the practical reality of such fanciful thought is a little more complicated =>