Continuity mistake: At the start of the El Dorado road race, you can see Herbie leaving the grid when the starter waves the green flag, but after a quick cut to Jim, Carole and Tennessee in Herbie, we see the other cars and Herbie is leaving the grid for a second time.
Suggested correction: If you look at where Herbie is in the starting field, you see that the only time we see him crossing the starting line, is after the cut scene inside the car. The scene before that, when he starts moving, we see him from his position in the field, not crossing the starting line.