A chariot on the bottom of the sea is not evidence of its parting, or of the drowning of an army foolish enough to drive between the walls of water. It is evidence, if indeed it is a chariot axle and wheels, of a chariot being in the sea.
There is excellent and utterly fascinating archeological evidence associated with many biblical and apocryphal writings and there is more delight to be found, in my view, in a single page of the dead sea scrolls, or the scientific excavations of Herod’s palace, than in a thousand fanciful interpretations of this sort.