About to start watching the 2016 Le Mans race and was wondering something. What if Tesla was able to make a battery pack that could take the strain of racing and provide enough capacity to make a real race car. With their battery swapping technology it should be possible to provide enough new "juice" for a next stint of 1 hour racing. When do you think we will start to see race cars in Le Mans using electricity as their only source of energy? As the Formula E proves, technology is rapidly progressing and who know how fast this can be a reality.