Evem better - what if Clark was a twin and his brother's/sister's navigational computer on his/her space ship was knocked out during the journey to Earth? Clark would still wind up in Kansas and be found by the Kents. But maybe his twin winds up crashing elsewhere and is found/raised by the Luthor family! He/She would be raised as Lex's sibling and perhaps wind up just as evil as Lex...Lex would have his very own, personal, anti-Superman/Superwoman.
