Road Hog?

Sad news that a wild boar has collided with a car and caused a (human) fatality on the M4 motorway (http://www.theguardian.com/uk-news/2015/jan/06/driver-lorry-collision-wild-boar). This was, presumably, one of the animals (or its offspring) that escaped from farming enterprises in England. Such a collision is rare in this country (our indigenous boar became extinct many years ago) but hitting any large mammal (e.g. sheep, cows, deer or horses) at speed is a potentially dangerous activity. Many Swedes are killed and injured each year when cars hit elk. Of course, the most dangerous mammal on motorways are other humans!