Robocars - Autonomous Drive, Self-driving, Driver-less cars

Can't we just have vacuum tubes like futurama?

I would not rule out vacuum tubes in future autonomous transport devices.. A far cry from the 12AX7, 25L6 and 300B I think we might well see their comback in the form of nanoscale vacuum transitors.
See http://www.nasa.gov/centers/ames/cct/office/cif/2013/nanoscale_vacuum.html