Without the safety harnesses, pets can be a distraction while driving and in an event of an accident they can be a projectile that can hurt everyone, including themselves.
However, experts are warning pet owners that most of the pet safety restraints being sold in pet stores don't work in a crash. In crash tests by the Center for Pet Safety, a nonprofit watchdog group, 25 of 29 products failed to protect the dummy pet. This is really problematic since if the safety restraint fails it can put your family and the driver at risk.
Despite claim of being "tested,” no pet restraints are tested by a regulatory agency, that includes government regulators.
The Center for Pet Safety list the products that did well in the test:
Sleepypod Clickit Utility $89.99 at Amazon
Gunner Kennel G1 Intermediate with Strength Rated Anchor Straps
~ G1 Intermediate TM $549.99 at Amazon
~ 8' Tie-Down Straps $79.99 at Amazon
Sleepypod Mobile Pet Bed with PPRS Handilock.$187.39 at Amazon
PetEgo Jet Set Forma Frame Carrier with ISOFIX-Latch Connection $133.99 at Amazon