Riding a bike is way more expensive than driving a car or truck. But if you need to sell that idea to a certain higher authority I understand............
I’ve got a 1975 BMW R90/6 - don’t ride it though it was my late husband’s. We went on a 6 week camping trip on that bike - custom seats so it was a dream to ride - even up to 8 hours a day. We loaded it up with all our camping gear - had a blast. Quiet, sturdy - dependable.