ANSWERS: 3
  • depends on car. Mine is 75. most are around 60 tho.
  • There are far too many variables for that question to be answered. What must be taken into consideration is: Aerodynamics Engine displacement Gear ratio Altitude Fuel injection vs carbeuration weight of vehicle and on and on and on......It's not as simple as that.
  • Hi! What would be THE most efficient National Speed Limit for the US to save the most oil??? cliff YIP

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