Four seasons, four people is the motto Mercedes chose for the presentation of its new E-series convertible. The car's fabric roof provides excellent noise insulation and is guaranteed winter-proof.Features available with the optional comfort-package include Air-cap, an ingenious system that significantly reduces wind turbulence felt by occupants when the roof is down, and Air-scarf, which funnels warmed air to occupants' necks in colder weather. Buyers can choose from seven different engines.