Unlike the Volvo C70, which has a retractable hardtop that consumes much of the trunk but leaves a small space for storage, the G6’s retracted roof cuts trunk capacity to a useless 2.2 cubic feet. One would be hard pressed to find enough space in there for an empty briefcase or a bachelor’s bag of groceries (a.k.a. a six-pack of Bud Light). Fortunately, the rear seat can be used for cargo when multiple passengers aren’t part of the equation.