$ curl -v 'http://70.34.216.176/ipfs/bafybeiaysi4s6lnjev27ln5icwm6tueaw2vdykrtjkwiphwekaywqhcjze/?format=car&dag-scope=entity' -o /dev/null
[..]
Content-Type: application/octet-stream
When HTTP client requests a CAR, the returned content type must be application/vnd.ipld.car with explicit version:
Content-Type: application/vnd.ipld.car; version=1