While Google is notorious for knowing computers better than people, it understands that people might be a bit afraid of its self-driving cars. So rather than show the power and cool-factor of its new autonomous vehicles, Google made them look like Little Tikes cars, built them out of foam, and capped speeds at 25mph. The result is that attention stays squarely on their world-changing potential. The option to evolve into that power and cool remains, but with a lot less fear about the risks of self-driving vehicles.