Acceleration

While driving at night traction and other lights flashed on, then gauges went wacky and finally headlights went out. Able to get to a safe place left until morning. Cranked fine charge gauge moved slightly. Battery about two months old so called for a tow as to not ruin it. Driver drove car up and also back off roll back. Replaced the alternator and now vehicle fails to respond to pressing gas pedal. Possible issues?