Now, WHO did I see that had an empeg hooked up via a cassette adapter and cigarette lighter power adapter thing? Off to search the BBS I go.

That's me in the corner, that's me in the spotlight - but I can't remember which thread!
Cigarette lighter plug and Empeg size plug, together with a length of lead (couple of dabs of solder - even for an oldie with shaking hands, that's not too hard) 3.5mm socket to 2 line plugs adaptor: All cheap and cheerful from your local Maplins. Make sure that the lighter plug has the right value fuse. Cassette adaptor widely available, but probably cheapest at Maplins. It ain't perfect, but it's a whole lot better than a cassette - whatever that is!