The week’s top stories have explosions, sweet deals and important safety updates. Our most popular story is about the explosion that happened at an airport’s hydrogen station, raising concerns about using hydrogen as an alternative fuel. Going into Labor Day weekend, our list of 10 financing deals for the holiday comes in at No. 2. The end of the month means another list of the top 10 best-selling cars, which lands at No.3. Rounding out the top five are the recall of the Pontiac Vibe, which complements an earlier Toyota recall, and our first look at the 2011 VW Jetta.