minor updates

viss2-explainer.md

@@ -3,10 +3,7 @@
 Modern vehicles use hundreds of sensors which produce thousands of different data points, or signals, amounting to terabytes of data per vehicle per day. 
 There is no question vehicles are transforming, becoming connected, electric and autonomous all of which relies extensively on signals data. 
 To facilitate innovation and development on various use cases the W3C established a strategic alliance with COVESA and formed the Common Vehicle Interface 
-Initiative (CVII). At the center of this effort is a common data model for these vehicle signals, namely the Vehicle Signal Specification (VSS). 
-The W3C Automotive Working Group is creating the means to access this data in a standardized way with the Vehicle Information Service Specification (VISS).
-The service can reside either in the vehicle, or in the cloud. Client applications  can also reside in the vehicle, cloud or running on a nomad device 
-such as a smartphone. 
+Initiative (CVII). At the center of this effort is a common data model for these vehicle signals, namely the Vehicle Signal Specification ([VSS](https://covesa.github.io/vehicle_signal_specification/)) which has its own [explainer](https://www.covesa.global/sites/default/files/COVESA%20Vehicle%20Signal%20Specification_060122.pdf). The W3C Automotive Working Group is creating the means to access this data in a standardized way with the Vehicle Information Service Specification (VISS). The service can reside either in the vehicle, or in the cloud. Client applications  can also reside in the vehicle, cloud or running on a nomad device such as a smartphone. 
 
 
 Vehicle signals, the definition and access to them, has historically been OEM proprietary. This has made it difficult for suppliers, commercial fleets, 
@@ -27,7 +24,7 @@ General use for telematics - include EV, insurance, ...
 The [W3C / COVESA CVII](https://wiki.covesa.global/display/WIK4/Common+Vehicle+Interface+Initiative+-+Home) is broad in scope and VISS is an important 
 component, to address needs within the vehicle, cloud, AI/knowledge graph, service and solution level all centered on the common vehicle data model VSS.
 
-VISS is a vital component in the realization of telematics use cases, such as fleet management, electric vehicle charging, driver behavior based 
+VISS is a vital component in the realization of telematics use cases, such as fleet management, electric vehicle charging, driver behavior and usage based 
 vehicle insurance, etc. 
 A standards based interface, and data model, supports interoperability between vehicle brands, and thus enables an open ecosystem where innovation of 
 new services can thrive.