diff --git a/20231229175601-car_electronics.org b/20231229175601-car_electronics.org
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+++ b/20231229175601-car_electronics.org
@@ -0,0 +1,8 @@
+:PROPERTIES:
+:ID:       70d667e1-a934-43d5-927f-84c44f647846
+:END:
+#+title: Car Electronics
+* [[https://en.wikipedia.org/wiki/On-board_diagnostics#OBD-II][OBD-II]]
+* Bluetooth-capable Connectors
+** [[https://www.obdlink.com/products/obdlink-mxp/][OBDLink]]
+** [[https://us.bluedriver.com/products/bluedriver-scan-tool][BlueDriver]]
diff --git a/20231229224724-org_roam_references.org b/20231229224724-org_roam_references.org
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+:PROPERTIES:
+:ID:       ec4304be-41d3-4004-8fa8-f00062725ed2
+:ROAM_REFS: https://www.orgroam.com/manual.html#Refs
+:END:
+#+title: Org-roam references
+
+Capturing information about references in an [[id:0567a35c-3afb-4ed5-a9ec-47425c5d6f06][Org-roam]] document.
+
+#+name: refs
+#+begin_src emacs-lisp :results code
+  (org-roam-node-refs (org-roam-node-at-point))
+#+end_src
+
+#+RESULTS: refs
+#+begin_src emacs-lisp
+("//www.orgroam.com/manual.html#Refs")
+#+end_src
+
+#+name: refs-with-types
+#+begin_src emacs-lisp :results code
+  (org-roam-db-query [:select :distinct [refs:type refs:ref]
+                      :from refs
+                      :where (= refs:node-id $s1)]
+                     (org-roam-node-id (org-roam-node-at-point)))
+#+end_src
+
+#+RESULTS: refs-with-types
+#+begin_src emacs-lisp
+(("https" "//www.orgroam.com/manual.html#Refs"))
+#+end_src