I find the magnet to be the glitchest special, True people can tap out faster than humanly possible it seems, but thats only if you manage to catch them lol. Half the time people just fly over me, and i take RAM Damage from them when they do. But i have found that driving toward them fast seems to work well for me. I pull them in faster, and it gives them less time to hop over me or what ever it is they do. Another thing that has worked for me is when i tell some one is going to pop off really fast. "you can usually tell who will after one attempt to catch them" I throw it into reverse right away so when they do get loose they dont fly over and they are a sitting duck for a good second to either turbo dash, or power missle to the side.
Cars that i cant seem to catch ever for one reason or another... Reaper, Crimson, and warthog. All three of those have flown past me darn near everytime. So i wouldnt bother with them if i were you. Cars that pop off randomly super fast....Honestly its just that. Random. I think with this group its the player. though how some of them do it is a mystery. Like Bam gotcha wahahahah! **bleep**???? how did he get behind me. hehe