How did you spend you Friday night? Tesla founder and CEO Elon Musk spent his answering questions about paying back the government and musing about the next kind of electric vehicle he might like to make.

After posting a number of tweets about his thoughts on proper taxation and how he did (PayPal and Zip2) and didn't make his fortune, Musk appeared to drop in something of a non sequitur:

While building an electric truck would be new for Tesla, it's not a new idea for the world of automobiles. There are already electric truck companies like Smith Electric and Zap World.

Still, you can't blame Musk for dreaming big. The mogul who not only builds electric cars, but is pioneering private space flight with SpaceX, is in a celebratory mood. His Telsa Model S Electric sedan was recently awarded a rating of 99 out of 100 by Consumer Reports. Plus, the company is now profitable and paying back government loans.

On the other hand, this and any other late-night Friday musings by the active entrepreneur should, perhaps, be taken with a grain of salt. Later that evening, he also tweeted this: