Google has been working on autonomous vehicle technology led by Sebastian Thurn since 2007. They have tested prototype vehicles that are equipped with laser-based LIDAR systems and other sensors to allow for driverless operation. The vehicles have driven over 500,000 accident-free miles on public roads. While legislation and rules are still being developed, some jurisdictions like Nevada and California have passed laws explicitly allowing autonomous vehicles. However, autonomous vehicles still struggle with some conditions like heavy rain or snow and may not be able to handle all road situations.