I think Haly had switched places during the accident at first maybe from a parallel universe or something but now I think maybe just maybe...this Haly is from Shun's racing game he plays at home...he did say he made a character looking like Haly as if his gf is playing alongside with him. And due to the accident in episode 1 and buying his dream car from the game irl...so it might triggered something and cause of the accident both Haly switch places...i don't know that just my theory so far...it's just my guess