IHG Rewards Club has had partnership with Hertz already for some time and now they have enhanced it with extra benefits for elite members.
IHG Rewards Club Spire Elite members can get Five Star elite status with Hertz that come with free upgrades. Not sure if this applies for Platinum members as well.
You can access IHG’s web page for Hertz here.
IHG Rewards Club members can earn 1,500 points per rental booked through IHG and 150 additional points per day. Spire Elites (Royal Ambassadors) will earn 500 bonus point per rental day.
Hertz Five Star status can sometimes be useful when it comes to upgrades. The main benefit of Hertz Gold Plus Rewards is the ability to skip the occasionally long rental queues.
The rental car companies have so many different rates and often the ones associated with the partners end up inflating the price and thus not worth booking. You can use this partnership to get Hertz status, however.