Long time reader of this forum. I'm unimpressed by the tone of your posts as well as the inaccurate information contained in them. First, neither Caterpillar or Detroit Diesel have offered engines for heavy duty transit buses in many years.
The Axess (correct spelling) has been offered in both 35 and 40 foot lengths for years, likely since the Axess model was introduced in the early 2000's. Straight from the ENC website https://www.eldorado-ca.com/heavy-duty-bus. The 30 foot version is the newest offering of the Axess model and is not yet reflected on the website.
As for the 30 foot