Making Waves: The Ultimate Streetworthy Boat Car: A nautical fanatic has turned a once sunken boat into a road legal, drivable car. Mark Ray designed and built his dream motor after his wife Robyn bet him that he could not do it. Robyn, 49, had been diagnosed with breast cancer and felt that Mark needed a project to take his mind from being her full time carer. He spent a total of £6,000 on merging a GMC Jimmy with a sunken and recovered Sea Ray Bow Rider. After stripping the boat of its motor, out drive and interior – including the floor – he built it into the car that had been taken apart and left with only its chassis, seats and motor.