a medium sized armored hovercraft with plasma blasters and torpedo bays. I assume these vehicles don't have to be realistic.
solar powered glider.
Zero emission prototype that runs on water.
I already have. Nothing fancy, a Kawasaki, Concours 14. Nice for touring.
I would have said a jeep grand cherokee, but I had one and it was too much of a gas hog. So I will say a Kia Soul
a bus with all facilities like bathroom, kitchen, small bed, and good efficiency. I wanna go world tour in that... :)