Car ferry from STT to STJ?

Yes there is a daily car ferry. I think it leaves Red Hook every 2 hours.

The following was cut and pasted from http://www.virginislandsthisweek.com/st_thomas/st_thomas_ferry_schedules.html

RED HOOK, St. Thomas to Enighed Pond, ST. JOHN
Boyson, Inc. (776-6294)
Love City (779-4000)
Global Marine (779-1739)
Round trip from $42-$50 – One way $27-$30

Depends on Carrier (plus Port Authority Fee). Be there at least 15 minutes before.
If you buy a round trip ticket you must return with the same Company.
Check your boat’s return schedule (see ads above) or buy a one way ticket so it doesn’t matter which boat you return on.

Leaving Red Hook, St. Thomas
Mon-Sat: 6:15; 6:30
7:00 am until 7:00 pm.Every Half Hour
Sundays: 7:00 am until 7:00 pm. Every Half Hour

Leaving Cruz Bay, St. John
Mon-Sat: 6:00, 6:15, 7:15, 7:00 –7:00 pm Every Half Hour
Sundays: 7:00 am until 7:00 pm Every Half Hour

Thanks!