[LAU] CLI interface for bit-for-bit duplication of CDs?

I wonder what the command line folks do here for CD duplication. I need to duplicate some new studio CDs for listening in different environment. The CDs require gapless writing - no 2 second gap - as some songs flow from track to track. They also should support CD Text. In the past I've done this stuff in k3b but for some reason many of the copies of new CD-Rs I'm receiving aren't playing in my car stereo. Strange as the original CD-Rs play perfectly. I've tried 4 different media types. It's always the same CD-R copies that fail. My copies work elsewhere - Windows iTunes ripping, my home CD player, my wife's car - just not my car. How do folks get bit-perfect CDs and what extra steps can I take to get these tough CD-R copies to play? Write slower, libparanoia, what else? As I'm not a CLI guy at all if you can provide some test commands for me to play with I'd really appreciate it. Thanks, Mark P.S. - I have also tried cleaning the car CD player with one of those special discs but it didn't help. - MWK P.S.2. - Doesn't *have* to be CLI, but I think I'd like to do it that way so I can try it in Cygwin also. - MWK again... ;-)