Comcast now offers 3G and 4G wireless Internet services in Portland, Oregon, in addition to its wired Internet services. The company announced yesterday that it will offer the new high-speed Internet service under the name of Comcast High-Speed 2go. Comcast will use Clearwire’s WiMAX network to deploy its 4G services and Sprint to deploy its 3G services.

The Comcast High-Speed 2go will operate on data cards that come with Comcast’s phone, Internet, or television products. The result will be a mobile broadband experience wherever and whenever customers need to be connected...