Gas guage? We don't need no stinkin gas guages!
Ride till yo hit the reserve. Once you switch it over, you have about 40 miles left. Thats enough time to think about getting fuel.
If you want to get real creative, thump on the tank. If it sounds dead (like thumping on a piece of wood) its full. If is sounds hollow, you need gas. There, how much did that cost? Oh, nothing....
As for riding it on the freeway, don't. The bike is a death trap. If you go faster than 35mph, it will vibrate your kidneys out of your body. Even if you could get it up to 55mph, you'll have to get off and puch it up hills....
Ok, I got that out of my system.... I'm just tired of reading everyone reservations about riding their bikes, like bikes. They act like they're made from model plastic, held together with super glue and stickers.
Of course you can ride your Savage on the freeway. It will comfortably cruise up to 70mph (after that, the wind buffeting makes the ride uncomfortable). The bike is plenty capable to make a cross-country trip with no special preparations. It is ALOT more bike than the detractors will ever admit to.
Seriously, if it was the fragile piece of crap that people make it out to be, I'd have gotten rid of it long ago.
What it is, is solid, reliable, simple, user friendly, light, maneuverable, fuel efficient, inexpensive, pure fun.
Just ride the danged thing. Quit worrying... If you keep that up, you'll have a 1000lb road king by the end of the summer, then be lamenting ever getting rid of your Savage......