No photos as I wasn't quick enough......... Last week in a nearby 'wealth Town' a Rolls Royce drove alongside us (pedestrians), and at the low speed the RR centres of the hubcaps were stationary! Clearly, they are mounted on a low-drag bearing and I wonder what happens at higher speeds? Impressive. Even more impressive (bearing in mind (no pun intended) the vast difference in development budget) was a 'Lotus Seven inspired kit car' I spotted at a show several years ago - The cycle guards on the front suspension on such cars tend to vibrate due to only being supported from the suspension on the inside of the wheel. The cycle guards of the subject car had additional stays on the outside, which were supported by a sealed bearing at the outside centre of the wheel. Very impressive for a home-built vehicle.