This is one way to show your product works... A Canadian company built a truck out of 11-thousand-pounds of ICE and then put one of their batteries in at, after cooling the battery to 40-below, the truck started right up and drove off.

It's a pretty creative thing to attempt if you're selling batteries or not. Watch the commercial for the Canadian company and also, the creation of the ice truck and the final video is the ice truck melting... in reverse.