Yep. For one day only, CarAdvice is masquerading as CabAdvice too.
The TX4 is a custom-made cab with a swivelling dicky seat with wheelchair ramp, free WiFi, acres of space and a flat floor for guide dogs and the like. Like anything built-for-purpose, there are fewer compromises.
The shape is familiar to any Anglophile and eccentric enough to lure everyone else.