I haven't had an altercation with a car. There was one that sped up to pass me and then turned right. I fell over b/c I couldn't stop in time. Now I ride in the traffic and I haven't had this problem since. I ride about a 40 mile ride each day. About half is with cars and half is on remote roads. So, let your wife know that the benefits far outweigh the potential problem.

Just ride safe and be aware.