Couple of things which I bear in mind. One, it's VED, not road tax or car tax. It's a tax on the ownership of a car, not the use of the roads. It hasn't been road tax since 1937, and VED is not predicated to pay for roads. That comes out of general taxation, which you and the BMW driver pay equally. So you 'pay' for the roads as much as he does. Two, VED is rated on vehicle emissions these days, so if bikes did pay a 'road tax' it would be zero anyway, as it is a zero-emissions vehicle. OK, all that is a bit airy-fairy. One argument that I think might make sense to BMW Man is - I own two cars as well as this bicycle. I could be in one of them, on the road in front of you, making the congestion that is slowing you down, but I am not. You should be grateful to me! (Actually, nothing would make sense to a guy like that. He's either had a bad day or has a personality disorder. Best left alone. Karma will strike, sooner or later.)