My biggest concern is getting pulled over by the police for whatever reason. That kind of deer rigging on the bumper actually might fly with the law in Oklahoma or Texas. As a motorist, I would still keep my distance if any vehicle load looks precarious. Treat that hanging deer like following a logging truck up a hill. Personally, I would want my deer lying inside my truck bed wrapped up in a tarp and the body cavity packed with ice as a matter of good game preservation.

Years ago I rode motorcycles and being close to a load like that on a bike would seem especially menacing.