Ah I understand what you're saying now, I sort of meant the same thing, but perpendicular probably wasn't the correct term
I'm aware of the technology, a close friend of mine had a Kuzma Stabi XL on loan that uses a linear tracking tonearm. Unfortunately I never had a chance to hear it while he had it \ (ultimately he preferred his Aries table, even though he thought the Stabi XL was technically superior).