IMHO, the company will probably go bankrupt due to lack of sales because of the high cost for the vehicles. Maybe if they packed it in something other than a Sports Car and lowered the production costs and sales price, it would catch on fairly well! However, I doubt that they would last very long due to the corrosive nature of salt water as well as any breakdown of waterproof seals and gaskets into any electrical system in the car.
Now, if they could take what they learned, package it into an amphibious mini-submarine capable of reaching depths of 100 to 200 feet, have onboard oxygen, have enough room for scuba gear for emergencies and a blowable escape hatch for escape at the same price, then they would probably have a winner! When exploring rivers, lakes or oceans within reasonable distances of coastlines, launching a mini-submarine from a ship, barge or ship, just isn't always feasible.
Frank