Towing an auto

With the engine running the trans will be lubricated and be fine.
Agree, in nuetral, but dont pull the driveshaft or it will puke all the trans fluid out. If you can afford to own a classic in NZ.....and you can afford to get it inspected and roadworthy.....just spend the money and do it the right way. Call a tow truck. Sheesh....to save a hundred dollars or so you are going to risk bent bumpers / damage where you tether on, a possible accident......not to mention the safety of others on the road.