diff --git a/constants.js b/constants.js
index 97633e3..39369e8 100644
--- a/constants.js
+++ b/constants.js
@@ -302,7 +302,9 @@ function createTemplateUpgrades() {
   createHelperUpgrades();
   createClickVictimUpgrades();
   createPowerupFreqUpgrades();
+  createFreeBuildingPowerups();
   deepFreeze(upgrades);
+  deepFreeze(powerups);
 }
 
 const prodUpgradeCounts = [1, 5, 10, 25, 50, 75, 100];
@@ -1198,27 +1200,19 @@ const powerups = {
     name: "Free Food",
     description: "Tasty!",
     icon: "fa-drumstick-bite",
+    prereqs: state => true,
     effect: state => state.resources.food += state.currentProductivity.food * 60,
     popup: (self, e) => {
       clickPopup("GULP!", "gulp", [e.clientX, e.clientY]);
       clickPopup("+60 seconds of food", "food", [e.clientX, e.clientY]);
     }
   },
-  "free-car": {
-    name: "Free Car",
-    description: "It's FREE!",
-    icon: "fa-car",
-    effect: state => state.belongings.car.count += 1,
-    popup: (self, e) => {
-      clickPopup("CAR!", "gulp", [e.clientX, e.clientY]);
-      clickPopup("+1 car", "food", [e.clientX, e.clientY]);
-    }
-  },
   "double": {
     name: "Double Dip",
     description: "Doubled productivity!",
     icon: "fa-cogs",
     duration: 10000,
+    prereqs: state => true,
     effect: state => state.currentProductivity.food *= 2,
     popup: (self, e) => {
       clickPopup("VROOM!", "gulp", [e.clientX, e.clientY]);
@@ -1226,6 +1220,32 @@ const powerups = {
   }
 }
 
+function createFreeBuildingPowerups() {
+  const prefix = "free-";
+  Object.entries(freeBuildingPowerupText).forEach(([building, text]) => {
+    const key = prefix + building;
+
+    powerups[key] = {
+      name: text.name,
+      description: text.desc,
+      icon: buildings[building].icon,
+      prereqs: state => state.belongings[building].count > 0 && state.belongings[building].count < 100,
+      effect: state => state.belongings[building].count += 1,
+      popup: (self, e) => clickPopup("+1 " + buildings[building].name, "food", [e.clientX, e.clientY])
+    }
+  });
+}
+
+const freeBuildingPowerupText = {
+  car: {
+    name: "Free Car",
+    desc: "It's FREE!"
+  },
+  bus: {
+    name: "Deserted Bus",
+    desc: "Just kidding. It's full of people."
+  }
+}
 deepFreeze(prodUpgradeText);
 deepFreeze(prodAllUpgradeText);
 deepFreeze(clickUpgradeText);
diff --git a/gorge.js b/gorge.js
index 45fee21..b53eec1 100644
--- a/gorge.js
+++ b/gorge.js
@@ -984,8 +984,16 @@ function doPowerup() {
 
   const choices = [];
 
+  const state = {
+    ownedUpgrades: ownedUpgrades,
+    resources: resources,
+    currentProductivity: currentProductivity,
+    belongings: belongings
+  };
+
   Object.entries(powerups).forEach(([key, val]) => {
-    choices.push(key);
+    if (val.prereqs(state))
+      choices.push(key);
   });
 
   const choice = Math.floor(Math.random() * choices.length);
@@ -1015,13 +1023,6 @@ function doPowerup() {
     doPowerup();
   }, delay);
 
-  const state = {
-    ownedUpgrades: ownedUpgrades,
-    resources: resources,
-    currentProductivity: currentProductivity,
-    belongings: belongings
-  };
-
   button.addEventListener("mousedown", e => {
     if (powerup.duration !== undefined) {
       addPowerup(powerup);