Some questions in transport sector

[AKomatsu999]

Dear all,
I recently have started using GCAM for transport sector analysis and have some questions.
( I'm using GCAM 7.0 and standard modelinterface )

1. By running the default scenario (configulation.xml), "transport service output by tech and vintage" query shows zero sales in South America_Northern - trn_pass_road_LDV_4W in 2020 and 2025. Also survival rate of sales in 2015 apparently differs from other techs. It seems no calibration or share weight restrictions in transportation_UCD_CORE.xml.
   Is it a problem of gcam-core or setting values, otherwise intentional outputs?

2. I understand transportation_UCD_CORE.xml (or similar xmls) stores actual values used in GCAM calculation and only "input-cost" is available. Is there any more information to understand "input-cost" such as VKT, CAPEX, OPEX?

3. input/gcamdata/inst/extdata/energy/UCD_trn_data_CORE.csv seems the one I want. However I am wondering the relationship of these two files. transportation_UCD_CORE.xml is strictty made from .csv data with conversion of region and sizeclass, or .csv is just a reference or settings used in older GCAM?

4. Is it correct that "cost of transport techs" query shows the cost including fuel cost and CO2 price calculated in GCAM?