If you are planning to take a roadtrip which involves NH1, and the stretch after Panipat, plan it with some buffer time on your hands... 6 laning of the highway between Panipat and Jalandhar is on full swing, and the good news is that once its complete you would be crossing over a 100 flyovers on this stretch with state of the art roads gently massaging your cars tires throughout!
The bad news, however, is that most of the time you would be driving in service lanes (which are at times 2 lanes wide, but mostly just about 1.5) along with the local traffic and highway traffic! The situation is bad while going towards Jalandhar though, its a little better while coming back!
I drove to Kurukshetra this weekend, and what takes just about 1.25 hours from Panipat, took me well over 2 hours! And the worst part being that I missed a beautiful sunflower field on the way for some reason! I really would have loved to take a few pictures there!