Rod Holdalls.

It doesn't take long for nets start to smell, particularly in the confined space of a car. No one likes smelly nets, and no one likes wet cars either. EVA is a wipe down plastic material that has welded seams that make them waterproof and watertight. These bags are commonly quite large to give them the capacity to carry a number of nets, as well as other usually wet items. In fact, you will be able to contain everything that gets wet in one of the capacious bags. 
Most tackle companies make their own products and prices will vary. 
They are cumbersome, but worth it.I