Click pic for larger view (we made it a little bigger then the original)
"Garrett Hedlund (who plays Dean Moriarty), Kristen Stewart (Marylou), and Sam Riley (Sal Paradise) inside Dean's Hudson, which is practically a character in the film. Garrett actually bought his down Hudson before shooting started. He could literally drive it with no hands, he was so at one with that car. There were times when he was going 100 miles an hour while acting—and, apparently, not looking at the road. But he always kept control."
Source WMag via @KstewAngel thank you.