Getting computer work done inside a vehicle is not easy if comfort is a requirement. Driving posture is not generalisable.
The ergonomy of most laptops (and keyboards in general) is poor. The modern laptop that is most ergonomic is the "2 in 1" design, which can be folded and used as a tablet.
For a programmer, an ergonomic keyboard with a trackball, connected to a 2-in-1 portable in tablet mode, might be easiest to assemble from common components for working during travel.
The ergonomy of most laptops (and keyboards in general) is poor. The modern laptop that is most ergonomic is the "2 in 1" design, which can be folded and used as a tablet.
For a programmer, an ergonomic keyboard with a trackball, connected to a 2-in-1 portable in tablet mode, might be easiest to assemble from common components for working during travel.