A wheel-chair!? ( I haven't seen this particular film.) But I would guess he or she was talking about one which moves smoothly and slickly. Obviously an Americanism and one which I haven't heard used before.
Probably refers to a wheelchair of the type used by tetraplegics, operated by using a suck/blow switch which looks like a drinking straw (see Christopher Walken as The Man With The Plan in 'Things To Do In Denver When You're Dead').