An anonymous reader writes: Over 115,000 reservations at $1,000 each were placed for the Model 3 in the first 24 hours. This gives Tesla a little extra operating cash. If each tech-savvy enthusiast who preordered the Model 3 in the first 24 hours follows through with their $35,000 purchase, Tesla would make $4 billion in sales. Right now, they're sitting pretty with $115 million from the down payment required for preordering. It looks like Tesla may have a big hit on their hands.