It straps on to the trunk/rear door with little clamps/hook pieces. https://a.co/d/0U2SBez

Everything is free to someone who can use it:

• Kids pink steel frame bike
• Adult XS/Kids XL steel frame bike, Pacific make with diy matte brick red paint job, needs a new seat and is missing the ring bearing under handlebars, but rides ok as is.
• 3-Bike Rack for a sedan/suv
• Britax Car Seat, 2017, 5-40 lbs rear facing 20-65 lbs forward facing.
• Duraflame space heater

https://imgur.com/a/jatcCKZ/