I was skeptical until I looked. Here's why: At one point (1966?) VW front wheel bearings were 'upgraded' to roller bearings.
Here's a roller bearing that retrofits the older cars.
So this suggests that I could get the OEM ball bearings and do some 'independent testing of the patent claims' by adding intermittent scuff marks in the outer race.
....for an electric Baja Bug at Bonneville.