When you had them in the car they need to be in a plastic bag vacuum sealed to make them sweat. the idea is to get them to ferment.I wrapped up 3 small cobs in fresh leaves last night. I ended up with about 100g total, husks, twine, and all. 12 hours in the car didn't noticeably change the color, so I'll keep going with it. I wrapped them pretty tight, to the point they're more like sticks than the preggers corn-cob look.
Does wrapping them tighter or looser affect much?
If you did have them sealed in plastic it just means you need to leave them longer.
If they still do not show signs of sweating then they were probably too dry when you made the cobs.
It is important that the buds are not dried too much. Depending on the type of buds used a couple of days hanging is more than enough drying.
Do not keep opening them to check the color of the buds, if you see the cobs look wet they are sweating nicely and as long as they remain sealed in a vacuum you will have no problems.
If I was you I would leave them at least 4 or 5 days in the car then if the wrappers look changed as in shriveled and wet remove the bags.
Dry the cobs with a paper towel only and then reseal them in a vacuum for another 2 or 3 weeks at room temps. The cure will occur during this time.
Once 2 or 3 weeks are over remove the cobs and dry them slowly in a warm dry atmosphere until the wrapper is dry to the touch.
They can be used at this stage but if you re seal them for another couple of months they will be a lot clearer, freshly cured cobs are very stony, aged cobs become clear and the stone will either be very reduced or disappear altogether.
These steps are critical if you want the best results.
Whether they are loose or tightly wrapped just changes the end look, tight it will come out like hashish, loose it will be a more natural look to the buds. Except they will not be green anymore.
Tangwena