Actually, there is still no company that really accept bitcoin for payment due to unpredicted and continual increase or decrease of its value which give possibly negative to merchants. In the field of Motorcycle / Car buying, the bitcoin is not that much popular. One reason can be that since people buy these things physically so they also prefer payment in local currency cash.
Why are we that wondering about bitcoin usage. We can convert bitcoin into fiat money and we can spend it on all the merchants clearly. So we don't have problem now to spend out bitcoins.