When you first walk up to Solar Waffle Works (2314 NE Alberta St.), you might think you’ve just happened upon any old mobile grub-rustling outfit. But take a closer look. The ponytailed kid patiently grinning while you decide between the Good Gravy and Maple Bacon can’t be older than 19, and is it just you or does the cook have braces? What are those gigantic panels on the cart’s roof? And how come those waffles are so dang cheap ($2.50-$5)? Because this food cart not only serves tasty waffles, but is also partially solar-powered, run voluntarily by young adults in a nonprofit vocational training program for underserved youth, uses food mainly sourced within 200 miles, and is entirely dedicated to funding local education programs. Making a difference never tasted better.