I love Hoyt Axton. Hey wrote (I don't think he sings it. my 45 has been buried for years) a cb song called white knight about a cop that tricks a guy into speeding. I love that song and have it on 45 vinyl but I can't find the lyrics anywhere online.
Shrek and I searched, the closest we came was "Speed Trap," but I don't think it's the song you are looking for. Couldn't find "White Knight" anywhere, not even on our albums.
We had lunch with Hoyt, a few times, he was a most generous man. My Mom was mad I didn't keep the check he wrote...I told her I don't do "fan" very well. He liked us because we treated him like a friend and not a star.