Repair vehicle and units

[Marek_Tucan]

Re immobilisation, I recall an incident from 6th Para Div landing in Normandy, the Tetrarch got stuck in a tangle of parachute webbings, the crew tried fruitlessly to cut the ropes etc., but in the end they had to risk a bit - they borrowed a flamethrower and set the ropes on fire en masse.
)
EDIT: Re. changing the tire under fire, it was enough for me to change it in a side lane on a mtorway, with trucks passing right behind my back...