The jeans in question were more likely to have been stonewashed. Stonewashed jeans are softened by rubbing against pumice stones during washing. Firstly the cars may get too cold. Cockroaches dislike the cold and would refuse to stay in the car. Secondly water is essential fo cockroaches survival and reproduction.
Cockroaches require food every seven to ten days but mut take in water every ten days.
Cockroaches might to attracted to a stretch limousine with a leaky wet bar but most of us don't drive limos. If you really want to attract cockroaches into your car, you may try scattering your empty beverage cans alongside your array of crumbes and you may be able to support a cockroach infestation fo a limited period of time. Those aren't pigeon's voices but rather their wings you are hearing. We are hearing the sound of air passing through feathers that are spread wide fo acceleration, beating faster for lift, and spread wide for takeoff. According to Hanna-Barberra public relations, the most commonly accepted answer is that Barney worked at Fred's employer, Bedrock Quarry and Gravel.