I like these for seeing well down the road, roos, moose, hogs, deer etc:
Thermal Imaging System – Model 9790
Even under ideal conditions, headlights only allow drivers to see about 450 feet straight ahead. Driver visibility is limited by the beam pattern of the headlights. It is also possible to outrun your headlights when driving at highway speeds. The Model 9790 provides you with the necessary visibility to see pedestrians and wildlife over 1,000 feet away and vehicles even further – giving you more time to react, and more room to stop.
http://www.jwspeaker.com/products/thermal-imaging-system-model-9790/