I got stuck once travelling and had some beef jerky so it was at least protein and not carbs. Too much salt and other things to do that regularly obviously, but that was my 'best' gas bar purchase. Most protein bars at those places are too high in carbs, but some places will have the "Pure Protein" bars. You'll find a better "bar" selection if you can hit a drug store instead. Desparate times call for desparate measures
