1. H A F E N B R A C KH A F E N B R A C K 2012 TPA Supply Chain Conference FMI / GMA Turbocharged Natural Gas™ Systems for HD Trucks January 23, 2012

2. New Generation Turbocharged Technology Natural Gas introduced through turbocharger – no fuel injectors – high-energy air Natural gas displacement of < 70% allows use of OEM diesel engine and parts  Perfect for aftermarket upgrade of existing diesel engines Third Generation Design From Detroit:Digital Read-Only Engine Controller Variable Fuel Metering Extensive Emissions Software Mapping First EPA approval of new turbocharged technology in September 2011 2

3. Dual Fuel Value Proposition for Fleet Owners 3 Annual Fuel Savings:Typical annual fuel savings of $20k - $22k per year. Equals 20% - 35% net annual fuel savings over 100% diesel Payback:Typical one year payback Cost: $12k for installed Dual Fuel System plus $8k to $12k for tanks Trade In / Transfer:Can transfer system to another approved engine family Cleaner burning natural gas extending engine life Flexibility:Seamlessly return to 100% diesel operation at any time Eliminate range-anxiety if next NG fill station is too far away Can hedge future uncertainty of diesel/natural gas price spread Universal Design:No practical limit on horsepower – No loss of pulling torque

4. APG’s Turbocharged Natural Gas™ System 4 Key Automotive Parts Vendors: IMPCO, Bosch, Woodward Governor

5. Current APG Engine Family Status for EPA Approval 5 EPA Approved Under New Regulations 2004 CAT C-15 (Internal Vehicle) 1 st EPA Engine Family Approval Under New Regs Under EPA Exemption for Approval 2009 DD15 2007 Cummins ISX 2007 Mack E-7 Next Up: (Engine Families 2010 through 2004) Cummins ISX & ISM D-12 & D-13 Series 60: 12.7L & 14.0L DD15 Mack E-7 & MP 7 Series CAT C-12, C-13 & C-15

6. Summary and Closing APG’s Dual Fuel System Designed In Detroit: Safe – Reliable – EPA Approved Technology also used on primary and back-up diesel generators – i.e. cold storage Fleet Owners have viable vehicular natural gas options: New and Aftermarket Fuel Cost Savings - - Reduce Emissions - - Hedge Future Fuel Cost Variations 6