If the law says it is OK, than I see no problem. I'd take advantage of it also if possible (I own my own business too).
I spoke to my accountant, and he said that the vehicle is supposed to be USED FOR BUSINESS, not just purchased by a business. So if it is used 75% of the time for business, than only 75% is deductible etc., and no less than 50% is allowed.
I'm not an accountant, I'd just hate to see anyone busted by the IRS because of possible misinformation.
Anyway, I'm not here to rain on your parade so enjoy you new truck.