Hypercar® Vehicles Frequently Asked Questions (FAQs)

The Hypercar® is a conceptual vehicle developed by the Rocky Mountain Institute (RMI) that integrates ultralightweight construction, ultra-aerodynamic design, and hybrid-electric propulsion to achieve extreme fuel efficiency without sacrificing safety or performance.

• Hypercar® vehicles are designed to achieve significantly higher fuel economy than conventional cars, with RMI modeling suggesting near-term efficiency of 90 miles per U.S. gallon of gasoline (2.6 L/100 km) and long-term efficiency of 200 mpg (1.2 L/100 km).
• The concept relies on a 'whole-system' approach to efficiency, combining several key technical strategies: reducing vehicle mass by 50-65 percent through advanced polymeric composites, cutting aerodynamic drag by 40-50 percent or more, and reducing rolling resistance by over 50 percent.
• A hybrid-electric drivesystem is preferred over battery-electric vehicles (BEVs) because it avoids the high cost, limited life, and weight of massive storage batteries while maintaining the advantages of electric propulsion. These systems can recover approximately 50 percent of braking energy.
• Advanced polymeric composites, specifically those containing carbon or aramid (Kevlar) fibers, are proposed for the body and chassis. These materials can be up to 67 percent lighter than steel and offer crash energy absorption around five times that of steel per kilogram.
• The Hypercar® platform is flexible regarding fuel types, with the potential to use gasoline, diesel, methane, or hydrogen. Hydrogen is identified as the most promising long-term fuel due to its low emissions and compatibility with fuel cells, which could become affordable sooner in Hypercars due to their lower power requirements.
• RMI estimates that affordable, production-volume Hypercar® vehicles could appear in the first few years of the 2000s, with early modified battery-electric versions potentially hitting the market by the year 2000.

APA

Lovins, A. B. (1998). Hypercar® Vehicles Frequently Asked Questions (FAQs). RMI. https://rmi.org/app/uploads/2017/05/RMI_Document_Repository_Public-Reprts_T97-04_HypercarsFAQs.pdf

Chicago

Lovins, Amory B. Hypercar® Vehicles Frequently Asked Questions (FAQs). RMI, 1998. https://rmi.org/app/uploads/2017/05/RMI_Document_Repository_Public-Reprts_T97-04_HypercarsFAQs.pdf.

Wikipedia

{{cite report |last1=Lovins |first1=Amory B. |title=Hypercar® Vehicles Frequently Asked Questions (FAQs) |publisher=RMI |date=1998 |url=https://rmi.org/app/uploads/2017/05/RMI_Document_Repository_Public-Reprts_T97-04_HypercarsFAQs.pdf |access-date=17 August 2026 |via=Climate Insights Directory}}

BibTeX

@techreport{lovins1998hypercar, author = {Lovins, Amory B.}, title = {{Hypercar® Vehicles Frequently Asked Questions (FAQs)}}, institution = {RMI}, year = {1998}, url = {https://rmi.org/app/uploads/2017/05/RMI_Document_Repository_Public-Reprts_T97-04_HypercarsFAQs.pdf}, urldate = {2026-08-17}, note = {Indexed by Climate Insights Directory} }