Could you please help my son ..Colorado trip planning advice

OP here.

Thank you all for your great advice and recommendations. My son is on his adventure. He stayed in the back of his truck last night in a Walmart parking lot in Aurora, Co. off of I-70.

He texted me a picture from Jones Pass this afternoon....46 degrees and the top is still snowed in. That temp sure sounds good compared to the 100+ heat index cr*p that we've had for weeks. he is prepared for low temps, if needed.

Again, thanks for the help.

Huck