The following information is based upon personal experience with the Nomad Roadtrip. This product is a USB Type C car charger and power bank (3000 mAh) in one device! There is also a USB A connector if you come across the need to charge a device without USB Type C.
The Nomad Roadtrip charges from the 12V outlet in your car and can provide 5V/2.4A (max) charge to connected USB Type C devices. This achieves quick charging for the Nexus 5X/6P!
If you arrive at your destination and would like to continue charging your connected device, simply take the Roadtrip along with you and use the 3000 mAh power bank! This is enough juice to fully charge most modern smartphones. For comparison, the Nexus 6P has a 3450 mAh battery and the Nexus 5X has a 2700 mAh.
The build quality of the Nomad Roadtrip is great and the packaging is clean and professional. There are LED lights to indicate the charge of the power bank. My only small complaint is that there was no USB Type C cable included in the package.
Summary: I rate this product highly and recommend this device for purchase! The combination of USB Type C car charger and power bank is very practical for those who are on-the-go and need extra juice for their device!
Product Link: Amazon