There is an assumption that it's faking it or exaggerating the severity, however it's nigh on impossible to prove you do/don't have it past showing full mobility.
3 years after my car got written off in traffic from someone driving into the back of me I still have bad days with my neck/shoulder (and consequentially lower back from overcompensating), gf seemed to be worse off as she was a passenger it's affected her right shoulder also.
Was the payout decent? Not really, after covering additional costs incurred it's basically where I was, but with a long term injury
Alternative is make insurance 1st party only and mandatory on your policy so you have to cover your own/passengers medical treatment (though I'd say pedestrians etc would still have to be covered), that way I suspect the claims will drop from those that don't really need it
_________________TwitterCharlie Brooker:
Macs are glorified Fisher-Price activity centres for adults; computers for scaredy cats too nervous to learn how proper computers work; computers for people who earnestly believe in feng shui.