After 25 years, Vauxhall brought back the GSi badge when it launched a high performance version of its sporty mainstream Insignia model. Exterior design updates include chrome air intakes at the front and a rear spoiler for improved levels of downforce, while on the inside, full-leather sports seats, steering wheel and aluminium pedals complete the look. Continuing QUBE/just-auto's review of interior design and technology trends, we take a closer look at how the automaker has created something special from a standard package.