Hybrid Aircraft
Adjustments
Increase price by 15%, Increase speed by 10 ft., Decrease EAC by 1, Decrease KAC by 1, Decrease Hit Points by 10%, The vehicle becomes an air and land vehicle, gaining either a land speed equal to its fly speed, or vice versa.
Systems
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Special
The vehicle must have a land speed or fly speed.
These vehicles operate just as effectively on the ground as they do in the air, whether they use extendable wings or jet propulsion.
Source
Tech Revolution pg. 79