For their cheapest model, they want to sell it at $10k which includes profit, but they can't build a single working one before that? Several thousand to build a single functional prototype is a drop in the bucket comparatively. This instills absolutely zero confidence that they could build anything... because well they've apparently built nothing except a preorder website full of mockups.
[ my public key: https://keybase.io/lancepioch; my proof: https://keybase.io/lancepioch/sigs/0E4fddxMmy7wigQN4gCwAqPpgjoY2a3fJFGWEeIUbU8 ]