The Lotus Elise has a largely bonded FRAME. In a little search to find more info, I found some interesting stuff. A lot of these cars use a small amount of rivets or welds in conjuction with the bonding. But many structual parts are totally bonded in.



The Lotus Elise is a roadster conceived in early 1994 and released in September 1996 by the English manufacturer Lotus Cars. The car has a hand-finished fiberglass body shell atop its aluminium extrusion and bonded frame that provides a rigid platform for the suspension, while keeping weight and production costs to a minimum. The Elise was named after then Lotus' chairman Romano Artioli's granddaughter, "Elisa".





http://en.wikipedia.org/wiki/Lotus_Elise



"Unlike McLaren F1, Ferrari F50's rear suspensions are directly bonded to the engine / gearbox assembly. This means the engine becomes the stressed member which supports the load from rear axle. Then, the whole engine / gearbox / rear suspensions structure is bonded into the carbon fiber chassis through light alloy. This is a first for a road car. "



Lotus's technology was originated by its supplier, Hydro Aluminium of Denmark. Hydro discovered that aluminium extrusion can be bonded by epoxy resin (glue) if it is adequately prepared by a special chemical in the bonding surface. Surprisingly, glue can bond the sections together strongly and reliably. Most important, the aluminium extruded sections can be made much thinner than traditional welding technique. Why ? because welded joints are weak, so the thickness of material should be increased throughout a member just to make a joint strong enough. Therefore Elise's chassis could be lighter yet stiffer.



http://www.autozine.org/technical_sc...h_chassis2.htm