super-compact
/ˌsuːpəkəmˈpakt/ /ˌsjuːpəkəmˈpakt/adjective
Very compact; much smaller than is usual or expected.
noun
1 North American. A car which is somewhat larger than a compact. Compare subcompact. Now rare.
2Something that is very compact; especially a very small compact car.
Origin
Mid 19th century; earliest use found in The Yale Literary Magazine. From super- + compact.