Actually not true.
https://www.automobile-catalog.com/make/plymouth/satellite_2gen/satellite_2_hardtop/1968.html
Top speed: 164 km/h (102 mph) (©theoretical); accelerations: 0- 60 mph 12.1© s; 165 km/h (103 mph)
I actually owned a ‘67 Satellite wagon with a 225 slant 6. Slow, but was a great motorcycle hauler. Had a trailer hitch, had a 3 rail motorcycle trailer, hauled motocross bikes in high school. Back cargo area was great for gas cans, toolbox, gear, cooler.