i've been using cubs frequently lately, in a double decker bus, in a convertible mini cooper, and a convertible jaguar. with the bubblebee wind covers i got NO wind noise (even when the jag was going at 100+ mph)... checked the lavs on the actors and the cub's sounded better (negated seatbelt noise, actors could swivel their heads as much as they wanted, and less wind noise from flapping shirts).
they've come in handy and have been great problem solvers on stressful car shoots.