Elon Musk is a busy guy, but maybe he will get slightly less busy if this plan goes through: his electric car company Tesla Motors has just made an offer to acquire the solar energy company he helped found, Solar City. Right now, it’s just a formal offer, not a done deal. Still, it would be an intriguing pairing, given that Tesla already makes a home energy battery optimized to work with solar panels. Get the full details at Recode.