Maybe we should just design cars that run on seawater (might not be so difficult)

The Deepwater Horizon Threat - NYTimes.com

"We would never have imagined so little action would be taken to prevent something like this [the BP oil spill in the Gulf of Mexico] from happening again. But, four years later, the Obama administration still has not taken key steps recommended by its experts and experts it commissioned to increase drilling safety. As a result, we are on a course to repeat our mistakes. Making matters worse, the administration proposes to expand offshore drilling in the Atlantic and allow seismic activities harmful to ocean life in the search for new oil reserves.

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