[refulgentis]

I think Claude is correct on the merits (Claude’s awesome in general)

Without more context about the speeds of the bus and racecar, I cannot determine which vehicle was going fastest based on the given statement. Simply saying that the bus passed the racecar does not provide enough information to compare their speeds.

[CuriouslyC]

This is true, the question isn't inconsistent with the bus and the racecar travelling in opposite directions, it's just implied that they're going in the same direction.