hi
i didn't test it (i don't have any casio calc), but i think i found the reason of the crash bug.
it's explained in the image (i hope you understand it xp)
ok, i just saw a mistake in the image. the inequation signs have to be switched in the ai.x statements
in words: your ai.x value collides with the player.x value, so that's oogd
but for the y checking, you also have to iclude the height of the ai cars. in the ai.y<player.y+8 you have to change the ai.y to ai.y+ai.height <player.y+8
