[Bazzer]

... a ban on magnets in toys then Scalextric could be in trouble!  

Yeah, 
They'd have to recruit staff that could design slot cars and get a factory that could build them properly
Alan

I do not quite understand the dislike of magnets, don't you think this is similar to aero downforce on full size racing cars.

I have Scalextric Formula Juniors, no magnets, feather weight cars and slide around all over the track and are great fun. I also have cars like the Scalextric Porsche 911 GT3 and GT40s both clearly relying on magnets to a great extent but also great fun and seem pretty fast as well.

Magnets seem part of the package to get a nice handling slot car, but they are only part of the story as far as I can see.