Reduce the spray ...

A couple of days ago, it rained quite heavily here in Raleigh. And unfortunately I had to drive somewhere while it was raining. And as usual, the visibility on the highway was really bad, partly because of the rain, but mostly because of the spray from the tires of the cars ahead of me.

Would'nt it be nice to have some sort of plastic deflector that could be placed behind the tire - Especially if they would automatically come down while the wipers are switched on. The mudguards that most cars have are just not large enough.