Two Tic Tac shaped craft traveling together from North to South at high speed about 4000 ft up, they caught my eye while I was driving NB on the 14 freeway, when the setting sun reflected off of one of them for a split-second flash. Fast movers coming towards me, they were traveling side by side with one slightly ahead of the other at a consistent speed, both white in color, no wings, no sign of propulsion, got a fairly good look at them as they went over just in front of me, and they looked like flying propane tanks. They came from over the Sierra Palona mountains, went across Acton, CA and were headed south towards the San Gabriel Mountains and they were perfectly round as viewing the tail ends of them as they went out of my view.