User blog comment:Edsta/ Sonic Spinball Ride:A Review/@comment-5316358-20120819221804/@comment-477304-20120820150444

Using Smith to voice the ride was a way of advertising, this was among the first VA work he did for the series. Secondly, the voice work he did for it specifically mentions the ride. Other VAs aren't contracted to voice new work for Sonic, there's a lot of hassle when it comes to these things.