old cartoons in the 30/40ties

hi everybody…

i am making a small movie about a car race in Las vegas…


the “thing” is the cars …
i ve seen an old walt disney movie where the sweet blue car acts like a star…
he’s jumping, rotating ect ect…
How did they do that?
they did all the drawings by hand of course but did they use the rotoscope
technique? Or where the so talented that they could draw everything out their mind? i can’t believe that to be honest…dit they film a car riding and turning first and then the rotoscope technique or what?
cause it’s a hell of a job if you do that out of your head… ???
this is the project…

http://www.youtube.com/watch?v=cKnMmKm9e1E