I'm pretty used to attention from other things so explaining shouldn't be a problem. The only time it's really hard is when the person is an idiot and you have to explain your explanations.
example:
Person- "How does the thing on the back help you save gas?"
Me- "The Boat Tail reduces the drag at the back of the car by allowing for attached airflow and a smaller wake which reduces the power needed for the car to move down the road."
Person- "what's a drag?"
Me- "uhhhhh...ecomodder.com. Just go there."
weather spotter- I'm about 15 miles east of cleveland. google maps says about a 5 hour drive