I spend a great deal of time writing about why front-seat passengers shouldn't ride with their feet on the dash. There's an airbag inside that deploys at some 300 km/h in case of a collision - even a relatively minor one.
Now I've found a post that shows precisely why you shouldn't ride with your feet on the dash. Never mind being told about it. Have a look and see.
Warning - This link contains very graphic photos of major foot trauma. Don't say you weren't warned. But if you know someone who continues to ride like this, send 'em the link.
