Or in excursion service like the SP steam loco that sometimes operates on the ex-SP line from Austin to Burnet.
Houston SP lines to model, radiating like spokes around the city:
the “Rabbit” line, Houston East and West Texas
T&NO mainline from the monster Englewood hump yard east to Beaumont and New Orleans.
“Texas Transportation Co” line paralleling Clinton Drive from near downtown to north of the turning basin, passing PTRA Basin yard and continuing along Clinton Drive on north side of the port of Houston.
LaPorte line on the south side of the Port of Houston from “Old Harrisburg”, south of Manhester, through Pasadena to LaPorte and then south through Texas City to go to Galveston.
the original Buffalo Bayou, Brazos and Colorado, first railroad in Texas, from Old Harrisburg south along Griggs Road to cross the Santa Fe/HB&T at T&NO Junction (near Long Point Road, Mykawa Road and Griggs, east end of Produce Terminal, and old Sears warehouse, thence west to run along Holmes Road (the city dump was there in the 1960s) to the South Main street overpass and West Junction and on to Sugarland…
the double track from Eureka Junction at northwest corner of Memorial Park, running south along the west edge of the park, crossing Buffalo Bayou, crossing under the Southwest Freeway and forming the east city limit of Bellaire, then joining the old BBB&C line west at West Junction.
the SAAP, San Antonio and Aransas Pass line which cut off from the westside double track at Bellaire Junction and paralleled the Southwest Freeway a mile or two west, continued west along the out of town extension of Westheimer
the Houston and Texas Central line from SP station west paralleling Washington Avenue to Eureka Junction and then paralleling Hempstead Highway…
last and LEAST, the Houston Heights Railroad, an SP owned