Actually the game was originally released 2002, but the US Tuned version did come out in 2003, and Xbox was in 2004. But anyway yes I do remember Auto Modellista and have played it a few times back in 2002. I did like the cel-shaded graphics and cartoony appearance look.
I purchased a used copy for $12.99 from Babbage's (now GameStop) at the Ocean County Mall in Toms River, New Jersey back in 2005 during the holiday season. I don't remember it much, but I think I got to Level 5 in Garage Life mode.