[patrickdavey]

Absolutely, this a million times. Realistically public transport should evolve to a network of self driving (smaller) vehicles - and yes, optimise the heck out of it. Bus systems are pretty inefficient things (except at peak times)

[acgourley]

Buses are likely most efficient at peak times (assuming efficiency to mean is cost-per-rider and not mean-annoyance-of-riders)