I was driving on 145th toward Aurora ave N and saw a huge plume of smoke (first picture), from far away i couldnt tell it was a semi because the smoke was so thick. As i got closer i noticed that it was a semi, i passed it as it was hard to breath because it was so thick. As i approached the light at 145th and Aurora i saw the truck coming up behind me, so i decided to take a video because i was waiting for the light. While it was smoldering behind me, it proceeded to catch fire as you can see in the video. At this point, i decided to leave just incase it could potentially blow up or something. The second picture i took is the aftermath after the fire crews and police arrived. If you have any other questions, ill gladly answer as many as i can
