Batplane II[7] was a retooled Wayne Aeropsace W4 Wraith fighter that married style with substance. In terms of design, it shares features with the Grumman F9F Cougar and McDonnell F-101 Voodoo. When the Batplane is stolen and triplicated by smugglers in Batman #61, Batman and Robin upgrade the Batplane to jet propulsion, adding at least "100 miles per hour" to its maximum speed.[5][8]