It's true CRC is not coming back. But US Railcar bought all CRC equipment and designs. US Railcar has asked for stimulus funds to build a new factory so they can build more of these FRA compliant DMUs.
SMART is readying a RFP to buy FRA compliant DMUs. They think there may be four vendors bidding on it, including Siemens and Nippon Sharyo.
European non-compliant DMUs on order or in service today in America are:
(A) NJT River Run (20) Stadler GTWs, (B) NCTD Sprinter (12) Siemens Desiros (C) CapMetro (6) Stadler GTWs, (D) DCTA (11) Stadler GTWs.
By the way, DART has (13) Budd RDCs in service today. DART, DCTA, and Stadler are talking with the FRA to get Stadler GTWs and FLIRTS into an Alternate FRA compliant vehicle. I have no idea if they will be successful or not. But DART and DCTA feel the talks are going well with the FRA so far. Whereas Stadler builds GTWs to a modular design, they appear willing to customize.
DCTA GTW (DMU for standard gage)
SNC-Lavalin GTW for Puy-de-Dôme (EMU for rack railway)
I doubt the Puy-de-Dome version could ever be FRA compliant, but it does look good and backs up that Stadler is one European vendor willing to customize.
Additionally, the GTW can come with a DMU or EMU power module.