Thanks for the responses. I didn't think there was a car ferry, but figured I'd ask. I'll be in Tortola for a couple of days prepping for an 8 week sail charter so instead of taxi, I'm going to rent a car in Tortola. However, my family is arriving into STT and I'm going to ferry over to them for a night to escort them back to Tortola and might want to pick up some things there before running back. So, having the same car in STT for a day/night would have made things easy - that's why I asked!