7:06 PM PT -- NASCAR just announced Newman is in "serious condition" ... but noted doctors say his injuries are "non-life threatening."
7:15 PM PT -- President Trump -- who was at the Daytona 500 on Sunday -- just Tweeted support for the NASCAR driver, saying ... "Praying for Ryan Newman, a great driver and a brave @NASCAR driver! #PrayingForRyan"
NASCAR driver Ryan Newman is in a Florida hospital after his car wrecked in a super-scary crash on the final lap of the Daytona 500 ... and video from the crash is INSANE.