Back when I too drove a gas guzzler I'd pull my van up to my streetsinging gig location at Five Points South (Bham, AL) and hook my Peavy Solo amp up to my Dodge van battery. The sound quality wasn't the best but it amplified both guitar via detachable pickup and voice via Shure SM57 mic. I was reasonable satisfied with the amplified sound. ---------- How I might carry all that on a bicycle (even with a BOB trailer, if I get one) is questionable. I no longer live in my van and Bham is almost a hundred miles distant. Back then I often thought about how I had earned the money to buy the amp from songwriting royalties and that encouraged me as I sang songs for the passersby. I do miss street performing as it's a very democratic process, and very 'interactive!' One cannot help but feel the pulse of his community in such an environment.