Non optimal orientation

[domoritz]

{"data":{"url":"data/cars.json"},"encodings":[{"aggregate":"?","bin":"?","channel":"?","field":"Miles_per_Gallon","type":"quantitative"}],"mark":"?"}

Recommendation:

I think a horizontal orientation would be better. Do you agree?

[g3o2]

I prefer horizontal. Also makes it quicker to read the axis label.