Comments: for those taking a road trip in July or August in a car without air conditioning, potentially with marginal cooling, and a lot of miles, it could make for a miserable road trip for families. Not all passengers will consider it a thrilling experience and may force it to be a "once in a lifetime" trip instead of the start of a recurring event.

June and September tend to be more temperate months in the warmer regions, and still warm enough in the northern climes.