What Musk says he would do if Tesla didn't exist

If Elon Musk was not already running Tesla and SpaceX he might take up another big project: creating an electric jet.  In fact, when asked during a recent Marketplace interview what Musk would be doing if Tesla didn't exist, he revealed that he already has a design for such an aircraft ready to go.  “I do like the idea of an electric aircraft company. I think one could do a pretty cool supersonic, vertical, take-off and landing electric jet. That would be really fun... I have a design in min...