Oil-Free Transportation

The document argues that the U.S. transportation sector can move entirely off oil by 2050 through a strategy of 'ultralighting first' followed by electrification. By reducing tractive load (mass and drag), vehicles can achieve order-of-magnitude efficiency gains, making batteries and fuel cells more affordable. This approach, combined with productivity improvements in logistics and urban design, could save trillions of dollars and significantly reduce global carbon emissions.

• Automotive fuel efficiency is severely limited by powertrain physics, where approximately 86% of fuel energy is lost before reaching the wheels. Tractive load—the power required to move the vehicle—is relatively small, but the low efficiency of internal combustion engines (nominally ~0.17) multiplies the fuel required. Reducing tractive load through lightweighting is more effective than powertrain improvements because saving one unit of energy at the wheels can save seven units of fuel.
• A strategy of 'ultralighting first' makes electrification more affordable by reducing the number of batteries or fuel cells required by 2 to 3 times. The use of carbon-fiber-composite structures can significantly reduce vehicle mass and simplify manufacturing, potentially reducing capital investment by up to 80% and tooling costs by 98-99%. Such designs can absorb 6-12 times more crash energy per kg than steel.
• Heavy (Class 7 and 8) truck efficiency could be tripled through a combination of platform fitness and operational changes. Potential gains include halving aerodynamic drag, reducing rolling resistance by 30%, and improving engine thermal efficiency by 6 percentage points. Additionally, permitting 'turnpike doubles' (two or three trailers per tractor) could raise freight-hauling efficiency to about 129 T-km/L, or 2.6 times the initial value.
• Aviation efficiency can be improved 3-5 fold in the long term through truss-braced wings, blended-wing-body configurations, and advanced-composite structures. The adoption of liquid-H2 'cryoplanes' using fuel-cell-fan or unducted-turbofan propulsion could potentially increase these savings to 6-7 fold.
• Beyond vehicle technology, productivity and access innovations could drastically reduce U.S. driving. Combining IT-enhanced transit, ride-sharing, New Urbanist land-use models, and IT-smoothed traffic flow could reduce U.S. driving by 46-84% while maintaining the same level of access.
• The U.S. could achieve a 2050 economy with significantly higher GDP, automobility, trucking, and flying while using no oil. This transition is estimated to have a 17% internal rate of return, with a total U.S. saving potential of $4 trillion in net-present-value, which could rise to $12 trillion if economic and military costs of oil dependence are included.

APA

Lovinsa, A. B. (n.d.). Oil-Free Transportation. RMI. https://rmi.org/app/uploads/2017/05/RMI_Document_Repository_Public-Reprts_AIP_Oil-FreeTransportation.pdf

Chicago

Lovinsa, Amory B. Oil-Free Transportation. RMI, n.d. https://rmi.org/app/uploads/2017/05/RMI_Document_Repository_Public-Reprts_AIP_Oil-FreeTransportation.pdf.

Wikipedia

{{cite report |last1=Lovinsa |first1=Amory B. |title=Oil-Free Transportation |publisher=RMI |url=https://rmi.org/app/uploads/2017/05/RMI_Document_Repository_Public-Reprts_AIP_Oil-FreeTransportation.pdf |access-date=17 August 2026 |via=Climate Insights Directory}}

BibTeX

@techreport{lovinsandoilfree, author = {Lovinsa, Amory B.}, title = {{Oil-Free Transportation}}, institution = {RMI}, url = {https://rmi.org/app/uploads/2017/05/RMI_Document_Repository_Public-Reprts_AIP_Oil-FreeTransportation.pdf}, urldate = {2026-08-17}, note = {Indexed by Climate Insights Directory} }