I've gotten a little crazy with safety lately. People in our area drive like lunatics, and I worry about an unsecured pug flying thru the windshield when I inevitably have to brake suddenly. I went out and emergently got some fleecy, padded seatbelt harnesses from Petco.
They snap on quickly, connect easily to seatbelts, have nice soft fleecy padding, and are constructed with a little bit of elastic so that I don't end up with strangled pug. However. They are not at all designed for turgid pug bodies. Poor Sasha looks like she's in a straitjacket.
And it's a little ridiculously too easy for them to wriggle out of them at inopportune moments. Sigh. The search goes on.