+1 for what caloso said

Sometimes its about being creative and not accepting limitations that the frame manufacturer imposes on you. In the absence of rear rack mounts, one can use (a) seat post mounted rack, (b) P-clamps or brake bridge adapter. Tons of youtube videos on how to do option (b) but it will require a bit of handiness. Option (a) is more straightforward but usually yields a less sturdy rack. If all you have to transport is a laptop then option (a) will suffice.