http://engineeringtv.com/blogs/etv/archive/2009/07/09/hydraulic-drivetrain-design.aspxJude Hueber, Lightning Hybrids Senior Engineer - Powertrain, Controls and Chassis - describes why they chose a parallel hydraulic system in their design. Depending on how the electrical controls are arranged, a parallel system can serve to lessen theenCommunityServer 2007.1 (Debug Build: 20917.1142)