More data makes it easier to train and evaluate systems but will not fix an inadequate approach.
Humans can drive with vision alone because humans are way way smarter than glorified regression models. We have a higher order model of what is happening. I am skeptical that you can replicate this with current AI. The approach of using LIDAR to compensate for dumber AI with more and better data seems more sound.
also Google being short on data given they've been working on this problem for 12 years is a pretty poor argument. If anything, it should tell us how are the problem of self-driving really is.