Though slightly off-topic, this did happen while I was conveying myself (by bicycle) toward the summit of a (lesser) mountain.
Last night, while on one of my twice-weekly night rides, I was riding up Mulholland Drive west of Los Angeles. Suddenly there was a really big flash. Instinct said 'lightning' but reason adjusted this to 'airplane or helicopter' - but it was very bright, even for aircraft. When I looked up I saw the faintly glowing trail across the sky... We had just had a very close call with a big giant space rock! Lucifer's Rubber Mallet, if you will.
Anybody else see it? T'was about 9:30-ish PM, and slightly to the west.