Exactly one day after President Obama announced a new plan to clean up gas-guzzlers and carbon emissions in the transportation sector, General Motors on May 20 said it is working to combine the advantages of gasoline and clean-diesel technology to meet those goals. Photo: General Motors Gas engine is 15% more effiicent. Related Links: Monster Machines Doing Heavy Duty in California Volvo's Fenix Asphalt Paver Concept Is a Vision Of Automated Processes and Sustainability Tested so far on midsize cars and in the lab, GM says that homogeneous-charge compression ignition (HCCI) engines produce 15% greater fuel economy and equally less
The market is generally healthy and steadily growing, and margins are up for large specialty contractors. Further, advances in design tools and owner demand for collaboration are giving subcontractors a seat at the table early on in projects.