Eric bought a new snowmobile from the North Pole Manufacturing Company. After buying the machine, Eric then modified the spark plugs and a few other things in order to 'soup it up$.$ In February, just after a snowfall, Eric was driving the snowmobile, when it tipped over, trapping him beneath it$.$ His leg was severely burned. Eric now wants to sue North Pole.

Discuss Eric$$s possible claims against North Pole, including what he must prove, & his likely success. What defenses may North Pole assert?