Just a few dozen or so - in every neighborhood.

Salad bars are magnets for bacteria and viruses. Even if the sprouts and ranch dressing aren’t tainted, the serving utensils may be.

The Silicon Valley start-up Chowbotics has devised what it says is a partial solution. Its device, which it calls Sally the Salad Robot, is aimed at reducing the risk of food-borne illness by assembling salads out of precut vegetables stored in refrigerated canisters.

Diners use a touch screen to place their orders, choosing from a menu of recipes or designing their own salads. The machine calculates the number of calories per salad and drops the veggies into a bowl in less than a minute. There is less human contact with the food.

And the hits keep coming. How long before they figure out $7.50/hr is better than $0.00/hr?